A word from Megan, the 'Mary Had a Little Lamb' costume creator:

This is Mary Powell (yes, she goes by both names), and she is dressed as Mary had a little lamb.

We got the idea because her name is Mary, it is such a sweet nursery rhyme, her costume would be homemade and original rather than store-bought, and lastly because she looks so young, sweet, and beautiful rather than a typical "scary" costume.

Her costume is homemade, and includes old fashioned pantaloons, a pioneer sun-bonnet, an apron-styled dress, and last (but not least) it includes her best friend...her lamb whose fleece was white as snow.